Carbon-feeding mechanism for arc-lamps.



L. O. KOZAR.

CARBON FEEDING MECHANISM FOR ARC LAMPS:

APPLICATION FILED AUG.9, 1909.

945,960, Patented Jan. 11, 1910.

avwamfoz I 5 6 flifozmzl o .UNITED STATES PATENT OFFTGE.

LADISLAV O. KOZAR, 0F WILKES-BARREL PENNSYLVANIA, ASSIGNOR OF ONE-THIRD TO JOSEPH MURGAS, OF WILKES-BARRE, PENNSYLVANIA.

CARBON-FEEDING MECHANISM: FOR ARC-LAMPS.

To all whom it may concern:

Be it known that I, LADISLAV O. KozAR, a subject of the Emperor of Austria-Hungary, and resident of \Vilkes-Barre, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Carbon-Feeding Mechanism for Arc-Lamps, of which the following is a specification.

This invention comprises improvements in carbon feeding means for are lights.

In the accompanying drawing, which illustrates the invention,Figure 1 is a side elevation of the carbon feeding mechanism, the parts being shown in full lines in normal position, and the dotted lines indicating the operation when current is turned on; and Fig. 2 is a side perspective view of the mechanism taken from the side opposite that shown in Fig. 1.

Referring to the drawing, 1 indicates a horizontal portion of the frame of the lamp, upon which are mounted a pair of stand ards 2 and 3, connected at their upper ends by a shaft 4, rotatable on the standards. Upon this shaft, between the standards, is mounted a ratchet or feed wheel 5, having its periphery notched or serrated, as indicated by the numeral 6, and a winding drum 7 and brake wheel 8, preferably made in one piece, as shown, are secured to the feed wheel so as to turn therewith. A string 8 or other equivalent flexible connection is wound several times around the drum and has one end secured to the drum and the other end attached to suitable carbon holding means 9. A brake band, consisting of a wire 10, extends around the top of the brake wheel, and one of its ends is attached to a spring 11, connected with the support 1, the other end of the wire being adjustably secured to the support by a set-screw 12, so that the pressure of the brake band upon the brake wheel may be adjusted.

At the opposite sides of the wheels 5, 7 and 8, are arranged parallel levers 13 and 14, the former being rigidly mounted on the shaft 4, and the latter being pivoted at one end upon a cross bar 15,which is rigidly connected to the shorter arm 13 of the lever 13. A segment 16 is fixed to the cross bar 15, concentric with the shaft 4, and a cord or equivalent flexible connection 17, secured to the upper end of the segment and arranged within a groove 16 on the convex Specification of Letters Patent.

Application filed August 9, 1909.

Patented Jan. 11, 1910.

Serial No. 512,050.

side of the segment, is connected to the core 18 of the solenoid 8 having its windings 19 in series with the carbons of the lamp. The longer arm of the lever 13 carries an adjustable weight 29 for counterbalancing the weight of the solenoid core, and a threaded rod 21, having an adjustable stop 22 thereon, is connected to the end of the longer arm of the lever 13 by a spring 28. The rod 21 extends through a suitable guideopening 24 in the frame 1. lVhen the solenoid core is pulled downward into the coil 19, the lever 13 is rocked. The stop 22 limits the upward movement of the longer arm of the lever, and the spring 23 prevents sudden stoppage and jarring of the parts.

The clutch lever 1.4:, which is pivoted at one end to the cross-bar 15, arches over the shaft 4, and its opposite end let normally rests upon a post 21, as shown in Fig. 1. This post is secured to the cross-piece l of the lamp frame and is vertically adjustable by means of the nuts 25 threaded on to the post above and below the cross-piece 1. The end l-il of the lever is normally pressed against the post 24 by a spring 25 connected to the lever and to a threaded rod 26 which extends through a guide-opening in the cross-piece 1 of the frame and is pro vided with an adjusting nut 27 beneath the cross-piece. By turning the nut 27 the tension of the spring 25 may be regulated.

The clutch lever 14: has an arm 14 ex-' tending upward above the top of the feed wheel 5, and a dog 28, wedge-shape in cross section, extends at right angles to said arm over the feed wheel, but is normally out of engagement therewith. I

Normally the parts are in the position shown in full lines in Fig. 1. \Vhen the current is turned on, the solenoid core moves downward, thus causing the balanced lever -3 to rock with the shaft 4- and the cross bar 5. on the shorter arm of the lever 13, moves downward. As one end of the clutch lever 14- is pivoted to the cross bar 15, while its opposite end is supported on the stationary post 24 it swings about its point of support during the first part of the downward movement of said cross bar, and thus the tooth or dog 28 is brought into engagement with and rests upon the serrated edge of the feed wheel The lever 1-1 being then supported upon the feed wheel; and connected to the cross bar 15, turns about the axis of the feed wheel with the further downward movement of the solenoid core, as indicated in dotted lines, Fig. 1, and thus causes tie feed wheel, winding drum and brake wheel to ro tate in unison in the direction of the arrow. The rotation of the winding drum causes the cord 8 to pull upward on. the carbon holding means and thus separate the carbons. The stop 2 limits the upward movement of the longer arm of the lever 13, and thus limits the downward movement of the solenoid core and cross bar 15, and limits the amount of movement that can be given to the feed wheel in the direction of the arrow, Fig. 1. The brake band 10 steadies the movement of the feed wheel and prevents it from being carried by inertia beyond the point where it is positively moved by the dog 28. The spring 25 holds the dog in engagement with the feed wheel after the lever l -l has rocked away from its support.

After the carbons have been separated, the gap between the carbons is regulated by the series solenoid s. it diminution in the quantity of current flowing, owing to an increase in the resistance of the gap between the carbons, allows the solenoid core to be drawn up by the weight 29 and the spring 25, and thus the feed wheel is rotated in the oppo site direction to that indicated by the arrow until the current becomes normal by the adjustment of the arbons. Movements of the feed wheel in one direction or the other will take place automatically, as long as current is turned on. After the lamp is in operation it will be noted that the clutch member opcrates, after it is in engagement with the serrations on the drum or feed wheel, to move the drum and wheel positively in both directions, in one direction by the connection to the solenoid and in the other direction by the weight 29 and the spring 25. \Vhen the current is cut off, the parts return to the positions shown in full lines in Fig. 1, the clutch lever 14: engaging the support 245 just before the end of the return movement, thus causing the dog 28 to be lifted. out of engagement with the feed wheel, and permitting the latter to move by the weight of the carbon holder and carbon until the carbons come together, if such movement is required.

\Vhat I claim is:

1. In a carbon feeding mechanism for are lights, a feed wheel mounted to freely rotate on its axis, a brake band fitting in a groove in said wheel and constantly in braking engagement and retarding and regulating its. motion, carbon holding means directly suspended by flexible means from the wheel the carbon being raised or lowered by the winding of said connecting means on the wheel, a movable clutch lever carrying a clutch member adapted to engage said wheel to move it in either direction, the construcl l l tion of said wheel and clutch member being such as to make positive connection, means contrlled by the current of the are light for moving said clutch lever, and means for throwing said clutch out of operation whenever the current ceases.

in a carbon feeding mechanism for are lights, a feed wheel mounted to freely rotate on its axis, a brake band fitting in a groove in said wheel and retarding and regu lating its motion, carbon holding means di rectly suspended by flexible means from the wheel the carbon being raised or lowered by the winding of said connecting means on the wheel, an operating arm pivoted on tl 2 axis of said wheel and extending beyond the edges thereof, electrically controlled means connected with said arm at one end for turning said arm in one di action on its pivot, means connected to the opposite end of said arm tending normally to turn it in the opposite direction, a clutch lever pivoted at one end to the end of said operating arm and extending across the wheel, means on said lever and wheel for making positive engagement between said wheel and lever to move said wheel in either direction, means tending to bring said clutch lever into engagement with the wheel, and a stop in the way of the free end of said clutch lever to throw it out of engagement with the wheel when the parts are in normal. position.

3. in a carbon feeding mechanism for are lights, a feed wheel mounted to freely rotate on its axis, carbon holding means suspended from said wheel and adapted to be raised or lowered by the rotation thereof, an operating arm pivoted on the axis of said wheel and extending beyond the edges there of, electrically controlled means connected with said arm at one end for turning said arm in one direction on its pivot, means connected to the opposite end of said arm tending normally to turn it in the opposite direction, a clutch lever pivoted at oneend to the end of said operating arm and extending across the wheel, means on said lever and wheel, for making positive engagement be tween said wheel and lever to move it in either direction, means tending to bring said clutch lever into engagement with the wheel, and a stop in the vzy of the free end of said clutch lever to throw it out of engagement with the wheel when the parts are in normal position.

4-. In a carbon feeding mechanism for are lights a feed wheel, a balanced lever pivoted between its ends at the axis of the wheel, a guide secured to one arm of said lever and extending concentric with the wheel, a solenoid having a core suspended by a flexible connection from said guide, a clutch lever pivoted to said arm of the balanced lever and having a dog adapted to rest upon the wheel when the levers are rocked from normal positions, a stop for raising the dog out I of engagement with the wheel when the le vers return to normal positions, said dog being secured to said clutch lever between its pivotal point and said support, a drum movable with the feed wheel, and a flexible connection between said drum and the carbon holding means.

5. In a feeding mechanism for arc lights, a feed wheel mounted for free rotation and provided with a brake surface, a cooperating band brake constantly in braking engagement, a clutch member constructed to positively engage and move the feed wheel in both directions, electrode holding means connected to the feed wheel, and means controlled by the current of the arc for operating the clutch.

6. In a carbon feeding mechanism for are lights, a feed wheel, a balanced lever pivoted between its ends at the axis of the feed wheel, a solenoid having a core supported upon one arm of said lever, an adjustable weight upon the opposite arm of the lever, a stop for limiting the movement of said lever, a clutch lever pivoted to one arm of the balanced lever and having a dog adapted to rest upon the feed wheel when the levers are rocked from normal position, a stop arranged to normally support the free end of the clutch lever and thereby hold the dog out of engagement with the wheel, said dog being secured to said clutch lever at a point between its pivotal point and the point of its engagement with its support, a spring for pressing the free end of the clutch lever toward its stop, and carbon holding means operatively connected to the feed wheel.

7. In a feeding mechanism for are lights, in combination, a shaft, a serrated feed wheel mounted for free rotation about said shaft, a feed lever pivotally mounted on said shaft, a clutch lever pivotally mounted upon one arm of said feed lever and extending across the feed wheel and provided with an upwardly extending arm, a dog mounted on said arm constructed to engage the serrations in the feed wheel, and means controlled by the current of the arc and connected to the feed lever for operating the feed wheel.

8. In a carbon feeding mechanism for are lights, a feed wheel mounted to freely rotate on its axis comprising a section having its periphery serrated or notched, a winding drum section and a brake wheel section, a brake band constantly engaging said brake wheel, flexible carbon supporting means wound on said drum, a movable clutch lever having a clutch member adapted to engage said notches constructed to move said wheel in either direction, against the action of the brake, means controlled by the current of the are light for moving said clutch lever, and means for throwing said clutch out of operation whenever the current ceases.

9. In a carbon feeding mechanism for are lights, a feed wheel mounted to freely rotate on its axis, comprising a section having its periphery serrated or notched, a winding drum section and a brake wheel section, a brake band engaging said brake wheel, fiexible carbon supporting means wound on said drum, a balanced lever pivoted between its ends at the axis of the feed wheel, a clutch lever pivoted to one arm of the balanced lever and having dog adapted to rest upon the serrated feed wheel when the levers are rocked from normal position and constructed to positively move the wheel in both directions against the action of the brake and electrically controlled means connected with the end of the other arm for turning it on its pivot, spring tending normally to turn said arm in the opposite direction, and means for throwing said clutch out of operation when the current ceases.

In testimony whereof I afiix my signature in presence of two witnesses.

LADISLAV O. KOZAR.

IVitnesses \V. L. RAEDER, D. O. COUGHLIN. 

